Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1570638e923fbf…

MALICIOUS

PDF

75.6 KB Created: 2021-02-06 07:04:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e9f4c694a8800352f06e1a8bd5480381 SHA-1: 02b52b5a6df1055487775672d3dfa3700435e452 SHA-256: 7b1570638e923fbf24074dbd351c8cc406eee2f1939481e0796a150e4a5f4b7b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crophysi.ru/aws?utm_term=buyer%2527+s+estimated+closing+cost+sheet In PDF document text
    • https://cdn.sqhk.co/duzefodaf/hiaghag/vunisizevaronezuzodizafil.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/jigihvg/vosebaxomejadu.pdfIn PDF document text
    • https://cdn.sqhk.co/nutewakizi/ci25vie/manexusozurapixabolaze.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/ifZjf5p/video_to_gif_converter_software_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/ic7jdcQ/auto_brawl_chess_battle_royale_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/4Pihhfo/6011796747.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/gjddZTf/transfert_pays_orange_tunisie.pdfIn PDF document text
    • http://interstart.online/singer_5400_c4_errorvqlmy.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/jdihgfr/79380968306.pdfIn PDF document text
    • http://nenidegelivon.22web.org/16709959221.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://funuduki.rf.gd/marathi_kadambari_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/27129036139.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/diagnostic_microbiology_textbook.pdfIn PDF document text
    • http://rorodev.rf.gd/ellipses_and_eccentricity_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/cursive_name_tracing_worksheet.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7B 5536 bytes
SHA-256: eec34731764139c9099332a5e426a66fcd1ae70455419c9a2608877d082a5ccf
font_01_sfnt_off0000fd32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD32 10676 bytes
SHA-256: 20ec7df19e1f33a65e9abf1938abca8304168a5c85b7b0cbfb1add0410079684